Dynamic Characteristics of Composite Piezoelectric Laminated Structure

Piezoelectric composites composed of piezoelectric materials and organic polymers, which have both stable piezoelectric properties of inorganic piezoelectric materials and excellent properties of piezoelectric macromolecule materials, have attracted much attention due to their excellent electrodynamic coupling properties. The piezoelectric and dielectric properties of piezoelectric composites depend on the material, component ratio, connection mode and other factors of single-phase, and the comprehensive properties are far better than those of each component materials, showing the overall characteristics of strong piezoelectric property, low dielectric coefficient, low brittleness and low density, etc. The appearance of piezoelectric composites has expanded the material domain space of laminated structure. Composite laminated piezoelectric structures have been widely applied in various military and civil fields due to their advantages of general composite laminated structures and intelligent components. In recent years, the research on laminated structure of piezoelectric composites has gradually become a frontier hotspot.